How to remove an aluminium door threshold

Written by mark morris
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How to remove an aluminium door threshold
Removing an aluminium threshold is quick and easy. (Getty Images)

Door jamb frames are made of four main pieces -- the top horizontal piece is known as the jamb header, the two vertical pieces are called jambs and the lower plate under the door is known as the threshold or the door saddle. Removing the threshold is a DIY project that most homeowners can complete in less than an hour with a few common tools.

Things you need

  • Drill with screw tip
  • Flat pry bar
  • Scraper
  • Two-part body-filler epoxy
  • Putty knife

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  1. 1

    Locate the threshold. It is the plate directly below the door when it's in the closed position. Find the screws holding the threshold to the floor. If they are not readily visible, remove the weatherstrip along the top edge of the threshold to reveal the screw heads.

  2. 2

    Loosen and remove the screws that hold the threshold down to the floor. Use a drill with the right sized screw tip for the screw heads. Remove one screw at a time. Use locking pliers to twist stubborn screws out of the threshold.

  3. 3

    Cut around the edges of the threshold with a utility knife to separate the threshold from the floor and jambs on either side. Cut completely through the old caulk. Use a scraper to remove the old caulk.

  4. 4

    Tap a small flat pry-bar under one corner and pry the threshold away from the floor. Shift the pry bar a few inches across the width of the opening and pry again. Continue working across the width of the door until the threshold is loose of its caulk.

  5. 5

    Pry the threshold out of the bottom of the door jamb frame gently staring at one side. Avoid scraping the jamb on either side. Lift the threshold out and set it aside to be used as a template if the threshold is to be replaced.

  6. 6

    Scrape any remaining caulk and other debris from the floor and side jambs. Fill the holes where the fasteners were with two-part body-filler epoxy. Mix the grey putty six parts to one part red activator. Smooth the mixed putty into the holes and allow to harden before covering or allowing normal traffic to resume.

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